Published:May 14, 2012 11:56

It was only fitting that 'Saturday Night Live's' 100th digital milestone was perhaps its most overblown and star-packed celebration to date, with stars including Justin Bieber, Justin Timberlake, Usher and Natalie Portman all involved in the three and a half minute song.

The song saw the celebrities and regular cast members Andy Samberg, Akiva Schaffer and Jorma Taccone come together in a song themed about a rather gymnastically impressive form of self-fellatio.

At the centre of the skit initially was teen pop sensation Justin Bieber, reports The Los Angeles Times, who appeared in a tuxedo with the regulars looking, as ever, squeaky clean. However, as the subject matter turned rude, the 18 year-old pop star looked horrified and took back stage to a plethora of other stars more than happy to tackle the adult theme.

The highlight of the performers was Natalie Portman, who put in a genuinely laugh out loud cameo as a rapper insisting she was still as bad as ever despite giving birth - at one point throwing her fake baby over the top of a roof.

Usher meanwhile turned up very briefly to say "I've never been in a Digital Clip before but these white guys sure like d***," before show host Will Ferrell finished the whole thing towards the end. All in all, a suitably jam-packed skit to celebrate the 100 coming up.